cherry-pick: add t3512 for submodule updates

diff --git a/strbuf.c b/strbuf.c
index 4d31567a1a6a67ae9697816d78da442f87ab5803..ac62982e672c22457468f601b35716dc9a52a81c 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "refs.h"
+#include "utf8.h"
 
 int starts_with(const char *str, const char *prefix)
 {
@@ -99,6 +100,29 @@ void strbuf_ltrim(struct strbuf *sb)
        sb->buf[sb->len] = '\0';
 }
 
+int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
+{
+       char *out;
+       int len;
+
+       if (same_encoding(from, to))
+               return 0;
+
+       out = reencode_string_len(sb->buf, sb->len, to, from, &len);
+       if (!out)
+               return -1;
+
+       strbuf_attach(sb, out, len, len);
+       return 0;
+}
+
+void strbuf_tolower(struct strbuf *sb)
+{
+       char *p = sb->buf, *end = sb->buf + sb->len;
+       for (; p < end; p++)
+               *p = tolower(*p);
+}
+
 struct strbuf **strbuf_split_buf(const char *str, size_t slen,
                                 int terminator, int max)
 {
@@ -563,3 +587,16 @@ int fprintf_ln(FILE *fp, const char *fmt, ...)
                return -1;
        return ret + 1;
 }
+
+char *xstrdup_tolower(const char *string)
+{
+       char *result;
+       size_t len, i;
+
+       len = strlen(string);
+       result = xmalloc(len + 1);
+       for (i = 0; i < len; i++)
+               result[i] = tolower(string[i]);
+       result[i] = '\0';
+       return result;
+}